3929739128 has 16 divisors (see below), whose sum is σ = 8420869680. Its totient is φ = 1684173888.

The previous prime is 3929739103. The next prime is 3929739131. The reversal of 3929739128 is 8219379293.

It is a happy number.

It is a super-2 number, since 2×3929739128² = 30885699228268400768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3929739128.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35086901 + ... + 35087012.

It is an arithmetic number, because the mean of its divisors is an integer number (526304355).

Almost surely, 2^3929739128 is an apocalyptic number.

It is an amenable number.

3929739128 is an abundant number, since it is smaller than the sum of its proper divisors (4491130552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3929739128 is a wasteful number, since it uses less digits than its factorization.

3929739128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70173926 (or 70173922 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 53.

The square root of 3929739128 is about 62687.6313797227. The cubic root of 3929739128 is about 1578.0517470259.

The spelling of 3929739128 in words is "three billion, nine hundred twenty-nine million, seven hundred thirty-nine thousand, one hundred twenty-eight".